- Is representative of "current state of the art" The Aurora Lancing Device uses a 33 gauge, uniquely designed lancet developed under project Velvet. The blood lancet is designed so that it can only be used in the Aurora lancing device. The lancing device features multiple depth settings and includes alternate site test capability. The lancet guidance system is designed to maximize lancet control thereby increasing comfort and reducing pain perception. The Aurora lancing device is comparable to the Roche Softclix and other lancing devices already in commercial distribution. Like Aurora the Roche Softclix lancing device offers diabetics a unique lancet design and precise lancet motion. Roche Softclix uses a 28 gauge lancet and has eleven depth settings as well as alternative site test capability.